 
   Keys
   ----
-  * **:set-type** is either `:train` or `:test` and defaults
+  * **:set-type** is either `:train`, `:test`, `:train-test` (all) and defaults
   to [[set-default-set-type]] or `:train` if not set"
   [& {:keys [set-type] :or {set-type nil}}]
   (use-connection

        * **id** the unique identifier of the data point
        * **instance** is the data set instance (can be an `N`-deep map)
        * **class-label** the label of the class (can be nominal, double, integer)
        * **set-type** either `:test` or `:train` used to presort the data
        with [[divide-by-preset]]; note that it isn't necessary to
        call [[divide-by-preset]] for the first invocation of [[instances-load]]


(defn set-default-set-type
  "Set the default bucket (training or testing) to get data.

  * **:set-type** is either `:train` (default) or `:test`;
  see [[elasticsearch-connection]]

  See [[ids]]"
  [set-type]
